Distinguish new media outlets from regular ones within categories
Refactors `getOutletsByCategory` to `getSeparatedOutlets` in `MainContent.tsx`, separating outlets with recent articles (marked as "NEW") from regular ones and improving UI presentation. Replit-Commit-Author: Agent Replit-Commit-Session-Id: aabe2db1-f078-4501-aab5-be145ebc6b9a Replit-Commit-Checkpoint-Type: full_checkpoint Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/3df548ff-50ae-432f-9be4-25d34eccc983/aabe2db1-f078-4501-aab5-be145ebc6b9a/ETDmxYB
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